y + y + `7/8` + y × `9/2` = 255
2y + `7/8` + y × `9/2` = 255
y × ( 2 + `9/2` ) + `7/8` = 255
y × ( `4/2` + `9/2` ) + `7/8` = 255
y × `13/2` + `7/8` = 255
y × `13/2` = 255 - `7/8`
y × `13/2` = `2040/8` - `7/8`
y × `13/2` = `2033/8`
y = `2033/8` ÷ `13/2`
y = `2033/8` × `2/13`
y = `2033/52`
@peachybee